Title :
Effect of chip waveform shaping on the performance of multicarrier CDMA systems
Author_Institution :
Dept. of Electr. Eng., Univ. of Saskatchewan, Saskatoon, Sask., Canada
fDate :
5/1/2005 12:00:00 AM
Abstract :
This paper studies the effect of chip waveform shaping on the performance of band-limited multicarrier direct-sequence code-division multiple-access (MC-DS-CDMA) systems. The performance criterion is the average multiple access interference at the output of a correlation receiver. A criterion based on the elementary density function is introduced for the performance comparison of various chip waveforms. It is demonstrated that the performance of MC-DS-CDMA systems is quite insensitive to the chip waveform shaping. Moreover, the optimum chip waveform for MC-DS-CDMA systems is practically the same as that of a single-carrier DS-CDMA system.
Keywords :
code division multiple access; radio receivers; radiofrequency interference; spread spectrum communication; DS-CDMA; chip waveform shaping; direct-sequence code-division multiple-access; elementary density function; multicarrier CDMA system; multiple-access interference; Bandwidth; Demodulation; Density functional theory; Direct-sequence code-division multiple access; Fast Fourier transforms; Multiaccess communication; Multicarrier code division multiple access; Multiple access interference; Narrowband; Time domain analysis; Chip waveform; direct-sequence code-division multiple access (DS-CDMA); multicarrier DS-CDMA; multiple-access interference;
Journal_Title :
Vehicular Technology, IEEE Transactions on
DOI :
10.1109/TVT.2005.844688
